Overflow (#84)

* Overflowing an integer conversion now results in a conversion failure

* CMake improvements for VERSION and inital packing support

* Fix for recent addition of overflow check

* Conan file now gets version from Version.hpp file too

CMakeLists.txt

@@ -1,9 +1,19 @@
 cmake_minimum_required(VERSION 3.4 FATAL_ERROR)
 
-project(CLI11 LANGUAGES CXX)
+set(VERSION_REGEX "#define CLI11_VERSION[ \t]+\"(.+)\"")
 
-SET(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
+# Read in the line containing the version
+file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/include/CLI/Version.hpp"
+    VERSION_STRING REGEX ${VERSION_REGEX})
 
+# Pick out just the version
+string(REGEX REPLACE ${VERSION_REGEX} "\\1" VERSION_STRING "${VERSION_STRING}")
+
+project(CLI11 LANGUAGES CXX VERSION ${VERSION_STRING})
+
+set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
+
+# User settable
 set(CLI_CXX_STD "11"  CACHE STRING "The CMake standard to require")
 
 if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
@@ -70,6 +80,18 @@ install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/CLI DESTINATION include)
 # to Config.cmake (otherwise we'd have a custom config and would
 # import Targets.cmake
 
+# Add the version in a CMake readable way
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+    CLI11ConfigVersion.cmake
+    VERSION ${CLI11_VERSION}
+    COMPATIBILITY AnyNewerVersion
+    )
+
+# Make version available in the install
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/CLI11ConfigVersion.cmake"
+        DESTINATION lib/cmake/CLI11)
+
 # Make an export target
 install(TARGETS CLI11
         EXPORT CLI11Targets)
@@ -129,3 +151,24 @@ if(CLI_EXAMPLES)
     add_subdirectory(examples)
 endif()
 
+# Packaging support
+set(CPACK_PACKAGE_VENDOR "github.com/CLIUtils/CLI11")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Command line interface")
+set(CPACK_PACKAGE_VERSION_MAJOR ${CLI11_VERSION_MAJOR})
+set(CPACK_PACKAGE_VERSION_MINOR ${CLI11_VERSION_MINOR})
+set(CPACK_PACKAGE_VERSION_PATCH ${CLI11_VERSION_PATCH})
+set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
+set(CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/README.md")
+set(CPACK_SOURCE_GENERATOR "TGZ;ZIP")
+# CPack collects *everything* except what's listed here.
+set(CPACK_SOURCE_IGNORE_FILES
+    /.git
+    /dist
+    /.*build.*
+    /\\\\.DS_Store
+    /.*\\\\.egg-info
+    /var
+    /Pipfile.*$
+)
+include(CPack)
+

cmake/AddGoogletest.cmake

@@ -15,7 +15,11 @@ download_project(PROJ                googletest
 )
 
 set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+
+# CMake warning suppression will not be needed in version 1.9
+set(CMAKE_SUPPRESS_DEVELOPER_WARNINGS 1 CACHE BOOL "")
 add_subdirectory(${googletest_SOURCE_DIR} ${googletest_SOURCE_DIR} EXCLUDE_FROM_ALL)
+unset(CMAKE_SUPPRESS_DEVELOPER_WARNINGS)
 
 if (CMAKE_CONFIGURATION_TYPES)
     add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} 

conanfile.py

@@ -1,14 +1,24 @@
 from conans import ConanFile, CMake
+from conans.tools import load
+import re
+
+def get_version():
+    try:
+        content = load("include/CLI/Version.hpp")
+        version = re.search(r'#define CLI11_VERSION "(.*)"', content).group(1)
+        return version
+    except Exception:
+        return None
 
 class HelloConan(ConanFile):
     name = "CLI11"
-    version = "1.3.0"
+    version = get_version()
     url = "https://github.com/CLIUtils/CLI11"
     settings = "os", "compiler", "arch", "build_type"
     license = "BSD 3 clause"
     description = "Command Line Interface toolkit for C++11"
 
-    exports_sources = "LICENCE",  "include/*", "cmake/*", "CMakeLists.txt", "tests/*"
+    exports_sources = "LICENSE", "README.md", "include/*", "cmake/*", "CMakeLists.txt", "tests/*"
 
     def build(self): # this is not building a library, just tests
         cmake = CMake(self)

include/CLI/TypeTools.hpp

@@ -79,8 +79,9 @@ template <typename T,
 bool lexical_cast(std::string input, T &output) {
     try {
         size_t n = 0;
-        output = static_cast<T>(std::stoll(input, &n, 0));
-        return n == input.size();
+        long long output_ll = std::stoll(input, &n, 0);
+        output = static_cast<T>(output_ll);
+        return n == input.size() && static_cast<long long>(output) == output_ll;
     } catch(const std::invalid_argument &) {
         return false;
     } catch(const std::out_of_range &) {
@@ -97,8 +98,9 @@ bool lexical_cast(std::string input, T &output) {
 
     try {
         size_t n = 0;
-        output = static_cast<T>(std::stoull(input, &n, 0));
-        return n == input.size();
+        unsigned long long output_ll = std::stoull(input, &n, 0);
+        output = static_cast<T>(output_ll);
+        return n == input.size() && static_cast<unsigned long long>(output) == output_ll;
     } catch(const std::invalid_argument &) {
         return false;
     } catch(const std::out_of_range &) {

tests/HelpersTest.cpp

@@ -348,6 +348,16 @@ TEST(Types, TypeName) {
     EXPECT_EQ("TEXT", text2_name);
 }
 
+TEST(Types, OverflowSmall) {
+    char x;
+    auto strmax = std::to_string(INT8_MAX + 1);
+    EXPECT_FALSE(CLI::detail::lexical_cast(strmax, x));
+
+    unsigned char y;
+    strmax = std::to_string(UINT8_MAX + 1);
+    EXPECT_FALSE(CLI::detail::lexical_cast(strmax, y));
+}
+
 TEST(Types, LexicalCastInt) {
     std::string signed_input = "-912";
     int x_signed;
@@ -357,7 +367,7 @@ TEST(Types, LexicalCastInt) {
     std::string unsigned_input = "912";
     unsigned int x_unsigned;
     EXPECT_TRUE(CLI::detail::lexical_cast(unsigned_input, x_unsigned));
-    EXPECT_EQ(912, x_unsigned);
+    EXPECT_EQ((unsigned int)912, x_unsigned);
 
     EXPECT_FALSE(CLI::detail::lexical_cast(signed_input, x_unsigned));